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arXiv 2106.14733cs.CV
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教学视频中动作的无监督发现

Unsupervised Discovery of Actions in Instructional Videos

Robotics at Google(谷歌机器人部门);Google Research(谷歌研究院)

AJ Piergiovanni, Anelia Angelova, Michael S. Ryoo, Irfan Essa

摘要:

在本文中,我们解决的问题,自动发现原子的行动在无监督的方式从教学视频。教学视频包含复杂的活动,是智能代理的丰富信息源,例如,自主机器人或虚拟助手,它们可以自动“读取”教学视频中的步骤并执行它们。然而,视频很少用原子活动、它们的边界或持续时间来注释。我们提出了一种无监督的方法来学习原子动作的结构化的人类任务,从各种教学视频。我们提出了一个序列随机自回归模型的时间分割的视频,学习表示和发现的顺序关系的任务的不同原子动作,并提供自动和无监督的自标记的视频。我们的方法优于最先进的无监督方法,具有很大的利润率。我们将开放源代码。

英文摘要:

In this paper we address the problem of automatically discovering atomic actions in unsupervised manner from instructional videos. Instructional videos contain complex activities and are a rich source of information for intelligent agents, such as, autonomous robots or virtual assistants, which can, for example, automatically `read' the steps from an instructional video and execute them. However, videos are rarely annotated with atomic activities, their boundaries or duration. We present an unsupervised approach to learn atomic actions of structured human tasks from a variety of instructional videos. We propose a sequential stochastic autoregressive model for temporal segmentation of videos, which learns to represent and discover the sequential relationship between different atomic actions of the task, and which provides automatic and unsupervised self-labeling for videos. Our approach outperforms the state-of-the-art unsupervised methods with large margins. We will open source the code.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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